Abstract
The palatal cleft is usually obturated prosthodontically after plastic operation. However, when the patient is too aged, the plastic operation of the cleft palate is impossible and so the improvement of the function or the appearance should be attributed to only the cleft palate prosthesis. For such a case, a useful apparatus having the functional dental arch, periphery and basal surface was fabricated by the application of the flange technique and the dynamic impression method involving replacement of the impression with the elastic rebasing material. This showed good retention and stability in service, and the appearance as well as the masticating, swallowing and sucking efficiency was successfully improved.